package org.apache.maven.lifecycle.internal;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.project.MavenProject;

/**
 * @since 3.0
 * @author Benjamin Bentmann
 * @author Kristian Rosenvold
 *         <p/>
 *         NOTE: This class is not part of any public api and can be changed or deleted without
 *         prior notice.
 */
public class PhaseRecorder {
  private String lastLifecyclePhase;

  private final MavenProject project;

  public PhaseRecorder(MavenProject project) {
    this.project = project;
  }

  public void observeExecution(MojoExecution mojoExecution) {
    String lifecyclePhase = mojoExecution.getLifecyclePhase();

    if (lifecyclePhase != null) {
      if (lastLifecyclePhase == null) {
        lastLifecyclePhase = lifecyclePhase;
      } else if (!lifecyclePhase.equals(lastLifecyclePhase)) {
        project.addLifecyclePhase(lastLifecyclePhase);
        lastLifecyclePhase = lifecyclePhase;
      }
    }

    if (lastLifecyclePhase != null) {
      project.addLifecyclePhase(lastLifecyclePhase);
    }
  }

  public boolean isDifferentPhase(MojoExecution nextMojoExecution) {
    String lifecyclePhase = nextMojoExecution.getLifecyclePhase();
    if (lifecyclePhase == null) {
      return lastLifecyclePhase != null;
    }
    return !lifecyclePhase.equals(lastLifecyclePhase);

  }

}
